Hey guys new here.
I have a samsung pcl542r that I got for free, the problem with it is that it only shows red and green on the picture...pulled the tv apart and all lamps light up but blue looks somewhat weak. I have tried messing with the focus on the lamps and the tv settings and no luck. What else can I check?

Could be contaminated fluid in the crt. Look down into the lens with the Tv on...